Voltcraft 240340 digital counter modules 6 digit voltcraft dcm240 the voltcraft 240 digital counter module is a 6 digit forwardsbackwards counter with din dimensions for installation in power supplies lab equipment and control panels standard module with din dimensions 72 x 36mm and 10mm digit heightthis well designed module has a number of key features including a forwardbackward counter with 6 digit display alarm output for an optional buzzer or led when a pre selected value is reac